Since we’re no longer forced to endure Cary Elwes shrieking his hammy little head off for 90 minutes, Saw II was inevitably going to be a less annoying experience than 2004’s Saw, but the movie is pretty effective in its own right. Not entertaining, mind you, but effective. Last fall’s surprise horror hit saw Elwes and another mad overactor at the mercy of the serial killer Jigsaw (Tobin Bell) – who devises for his prey wildly elaborate devices of torture that defy both description and belief – and in one of Saw II’s few impressive twists, he’s apprehended at the end of the movie’s first reel. What follows resembles what might result if you watched The Silence of the Lambs and Seven in picture-in-picture format. As Jigsaw – in sinister, I-know-something-that-you-don’t Hannibal Lecter mode – is interrogated, and his master plan dissected, by Donnie Wahlberg’s quick-to-boil cop, a whole new slew of potential victims, including Wahlberg’s teenage son, try to survive a vicious spook house by evading Jigsaw’s contraptions and deconstructing the maddeningly obtuse sets of clues the killer has left them. (Like its precursor, Saw II makes explicit what Seven left to your imagination.)